Does it happen to run out of energy during quests with stamina potions in inventory? On which quests have you noticed this? What’s printed in the logger when it’s blocked with the equipment tab open? Which dialogue option does it fail to select?
Also, starting in debug mode (press F4 on the GUI) will make it skip all initial bank checks, grand exchange trip, equipping gear, getting inventory items. This can be used to continue a previously started quest but will require the bot to have the required items in inventory and be at an apropriate location.